diff --git a/tool/gen-mailmap.rb b/tool/gen-mailmap.rb
index 27b7abf8de..df1884520c 100755
--- a/tool/gen-mailmap.rb
+++ b/tool/gen-mailmap.rb
@@ -3,7 +3,7 @@
 require "open-uri"
 require "yaml"
 
-EMAIL_YML_URL = "https://cdn.jsdelivr.net/gh/ruby/ruby-commit-hook/config/email.yml"
+EMAIL_YML_URL = "https://cdn.jsdelivr.net/gh/ruby/git.ruby-lang.org/config/email.yml"
 
 email_yml = URI(EMAIL_YML_URL).read.sub(/\A(?:#.*\n)+/, "").gsub(/^# +(.+)$/) { $1 + ": []" }
 
diff --git a/tool/sync_default_gems.rb b/tool/sync_default_gems.rb
index a5f8c7fd09..9fcbeb7d22 100755
--- a/tool/sync_default_gems.rb
+++ b/tool/sync_default_gems.rb
@@ -434,7 +434,7 @@ def message_filter(repo, sha)
   print "[#{repo}] ", log
 end
 
-# NOTE: This method is also used by ruby-commit-hook/bin/update-default-gem.sh
+# NOTE: This method is also used by GitHub ruby/git.ruby-lang.org's bin/update-default-gem.sh
 # @param gem [String] A gem name, also used as a git remote name. REPOSITORIES converts it to the appropriate GitHub repository.
 # @param ranges [Array<String>] "before..after". Note that it will NOT sync "before" (but commits after that).
 # @param edit [TrueClass] Set true if you want to resolve conflicts. Obviously, update-default-gem.sh doesn't use this.